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* Fix issue where tilde (``~``) characters were incorrectly
percent-encoded in the path. (Pull 1692)

-------------------

* Add mitigation for BPO-37428 affecting Python <3.7.4 and OpenSSL 1.1.1+ which
caused certificate verification to be enabled when using ``cert_reqs=CERT_NONE``.
(Issue 1682)

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* Propagate Retry-After header settings to subsequent retries. (Pull 1607)

* Fix edge case where Retry-After header was still respected even when
explicitly opted out of. (Pull 1607)

* Remove dependency on ``rfc3986`` for URL parsing.

* Fix issue where URLs containing invalid characters within ``Url.auth`` would
raise an exception instead of percent-encoding those characters.

* Add support for ``HTTPResponse.auto_close = False`` which makes HTTP responses
work well with BufferedReaders and other ``io`` module features. (Pull 1652)

* Percent-encode invalid characters in URL for ``HTTPConnectionPool.request()`` (Pull 1673)